5
-
3
=
____________________
11
-
7
=
____________________
20
-
4
=
____________________
13
-
8
=
____________________
10
-
2
=
____________________
20
-
9
=
____________________
10
-
5
=
____________________
15
-
10
=
____________________
19
-
6
=
____________________
20
-
14
=
____________________
14
-
10
=
____________________
18
-
18
=
0
